1 traveller, 2 travellers, 3 travellers, 4 travellers... and finally you achieve the 10!10 progressive puzzles to learn in a fun way how to count. Illustration by Txell Darne. Suitable for children 3 years old and up. Material Recycled cardboard and paper. Packaging Sturdy cardboard box. Size of the puzzle 59 x 7.5 cm. (longest) / 12 x 7.5 cm (shortest. Box Size 45 x 15 x 7 cm. WARNING! Not suitable for children under three years. Small parts.The CE marking guaranties that this Londji Toy meets the European Toy Safety Standard EN71. Our toys have successfully passed the most strict safety tests made by independent testing labs approved by the European Union authorities.